USN-5732-1: Unbound vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Description

It was discovered that Unbound incorrectly handled delegations with a large number of non-responsive nameservers. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. Update Instructions: Run `sudo pro fix USN-5732-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: unbound – 1.9.4-2ubuntu1.4 python3-unbound – 1.9.4-2ubuntu1.4 libunbound8 – 1.9.4-2ubuntu1.4 python-unbound – 1.9.4-2ubuntu1.4 unbound-anchor – 1.9.4-2ubuntu1.4 unbound-host – 1.9.4-2ubuntu1.4 libunbound-dev – 1.9.4-2ubuntu1.4 No subscription required

CVEs contained in this USN include: CVE-2022-3204.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.336.0
• CF Deployment
  • All versions prior to 23.3.0

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

• cflinuxfs3
  • Upgrade all versions to 0.336.0 or greater
• CF Deployment
  • Upgrade all versions to 23.3.0 or greater

History

2022-12-07: Initial vulnerability report published.